CVE-2026-5057 ATEN Unizon RpcProvider Missing Authentication Denial-of-Service Vulnerability
Remote attackers can cause denial of service in ATEN Unizon due to missing authentication in the RpcProvider class.
- Exploited in the wild
- Not known
- Login needed
- Not needed
- Attackable
- Over the internet
- Victim action needed
- Not needed
- Fix
- None listed
What is CVE-2026-5057?
CVE-2026-5057 is a high-severity missing authorization vulnerability in ATEN Unizon, published on 29 Jul 2026. An attacker can exploit it over the internet without logging in, with no action from the victim.
Official description
ATEN Unizon RpcProvider Missing Authentication Denial-of-Service Vulnerability. This vulnerability allows remote attackers to create a denial-of-service condition on affected installations of ATEN Unizon. Authentication is not required to exploit this vulnerability.
The specific flaw exists within the RpcProvider class. The issue results from the lack of authentication prior to allowing access to functionality. An attacker can leverage this vulnerability to create a denial-of-service condition on the system. Was ZDI-CAN-29041.
Weakness: CWE-306
Which versions are affected by CVE-2026-5057?
How do I fix CVE-2026-5057?
No fix has been published for CVE-2026-5057 yet. Limit exposure of the affected software until one is available.
Upgrade, and check permissions on every request on the server, not only in the interface. More about Missing authorization.
Is CVE-2026-5057 being exploited?
There is no known exploitation of CVE-2026-5057 in the wild and no public exploit code.
Sources
Also known as GHSA-38fr-fpg3-22rf.